3 cm / 1.18 in Rectangular Plastic Strap Adjuster Buckle AL005511

What Is This 3 cm / 1.18 in Plastic Strap Adjuster Used For?

This rectangular plastic strap adjuster buckle is used to control strap length on bag straps, backpacks, sports bags, belt-style textile products, webbing straps, pet accessories and light-to-medium textile equipment.

The strap passes through the adjuster and can be set to the required length. This makes it useful when the same product needs adjustable strap positioning for different users or carrying styles.

Correct Strap Size

This product has a 30 mm / 1.18 in inner width. It is suitable for approximately 3 cm / 1.18 in webbing and straps. The width value is 5.2 mm / 0.20 in and the thickness is 4.1 mm / 0.16 in.

Important: This is a 3 cm / 1.18 in strap adjuster. It should not be selected for 4 cm, 4.8 cm or 5 cm straps. Thick, stiff or slippery webbing should be tested before production.

This Is Not a Side-Release Buckle

This product does not provide a quick open-and-close locking function. It is a one-piece rectangular strap adjuster used to shorten, extend or fine-tune strap length.

Important: Do not select this product as a bag lock or side-release connector. It adjusts strap length; it does not replace a locking buckle.

Technical Dimensions

• Product type: Rectangular plastic strap adjuster buckle
• Size group: 3 cm / 1.18 in
• Inner width: 30 mm / 1.18 in
• Width: 5.2 mm / 0.20 in
• Thickness: 4.1 mm / 0.16 in
• Material: Plastic
• Color: Black
• Minimum purchase quantity: 250 pcs

How to Check Webbing Compatibility

Strap width is the main selection point, but it is not the only factor. Strap thickness, stiffness, weave density and surface smoothness also affect how the webbing passes through the adjuster and how well it holds during use.

Application Warning: Test with the real strap before production. Two straps with the same width can behave differently depending on thickness, stiffness and surface texture.

When to Choose Plastic Instead of Metal

Plastic strap adjusters are preferred when low weight, simple use and cost-effective production are important. They are suitable for everyday bags, sports bags, soft textile accessories, children’s products, pet products and many light-to-medium load applications.

For heavy loads, high pull force, industrial use or a premium metal look, metal strap adjusters and frame buckles should be considered separately.

Choosing Between 3 cm, 4 cm and 5 cm Adjusters

The adjuster should be selected according to the strap width. A 3 cm adjuster is suitable for approximately 30 mm webbing; 4 cm adjusters are used for approximately 40 mm straps; 5 cm adjusters are used for wider 50 mm strap systems.

Important: Similar-looking strap adjusters can have different sizes. If the wrong size is selected, the strap may not pass through, may remain loose or may fail to hold the adjustment properly.

Common Questions Before Ordering

What strap width is this adjuster suitable for?

It has a 30 mm / 1.18 in inner width and is suitable for approximately 3 cm / 1.18 in straps.

Can it be used with 4 cm or 5 cm webbing?

No. This product is for the 3 cm size group. Wider straps require wider adjusters.

Is this buckle plastic or metal?

This product is made of plastic. It is not a metal or zinc alloy buckle.

What color is it?

It is black.

Is this a side-release buckle?

No. This is not a side-release buckle. It is a rectangular strap adjuster for strap length control.

Can it be used for bag straps?

Yes. It can be used for bag straps, backpack straps, sports bags and textile webbing where strap length adjustment is needed.

What is the minimum purchase quantity?

The minimum purchase quantity is 250 pcs.

Can it be used with thick webbing?

Thick or stiff webbing should be tested before production to confirm smooth passage and grip.

When should a metal adjuster be selected instead?

Metal adjusters are better for heavier loads, higher pull force or products that require a premium metal appearance.