Easywisdom 100 PCS 5/8" (15mm) Black Contoured Side Release Plastic Buckles with A Push Switch+ Free Cable Tie Package includes 50 pcs 5/8" (15mm) buckles.Designed for 5/8" belt. Great for hundreds of uses belts, backpacks, straps and much more Upset: strong toughnessmaking of environmental protection material Dimensions: 1.5" x 0.3" x 0.8" There is a push switch on the buckle and It determines whether you can unlock buttons or not.