Dumbbell Bar Spring Lock, 8 Pieces Collar Spring Lock Clamps Compatible With Dumbbells Spring Locks Spring Clip Dumbbell Spring Clip Compatibl1.High quality materials: high quality ABS plastic made from spring steel. Strong and durable, not easy to deform. Non-slip and loose. It uses the automatic flow and bake paint assembly line technology to realize 360 degree spray without dead ends.^2.Size: 30mm diameter. High quality spring steel, plastic handle. Easy to use, clean and hygienic.^3. New accessories for fitness equipment: clean and hygienic, environmentally friendly and odorless. Super soft protective cover. It is convenient and quick to assemble and disassemble. Make fitness easier.^4. Special function: non-slip and loose. Easy to use, strong and not deformed. Spring clip closure for dumbbell bars. It can be easily disassembled and operated.^5. Widely used: multifunctional barbell clip. The snap lock fits many different barbell bars with a diameter of 30mm, used for weightlifting, fitness, strength training, strength training, triceps exercise machine, etc.