Ladder lock buckle can also be called tension lock. This kind of lock can be adjusted from both ends to adjust the belt to the appropriate length and prevent sliding.
Tensionlock - Ji-Horng Plastic Co., Ltd.
EXTEMPORE 10 Pcs 1 inch (25mm) Plastic Ladder Slider adjustable
Non Adjust Side Release Buckle - Ji-Horng Plastic Co., Ltd.
Tensionlock - Ji-Horng Plastic Co., Ltd.
Ji-Horng Plastic Co., Ltd. - plastic buckle, hook, slide - EC21 Mobile
Adjustable Buckle, Square Loop
Tensionlock - Ji-Horng Plastic Co., Ltd.
Ji-Horng Plastic Co., Ltd. - plastic buckle, hook, slide - EC21 Mobile
Non Adjust Side Release Buckle - Ji-Horng Plastic Co., Ltd.