Features: 🙌 The M8 screw adopts the shape of a hammer head, which is convenient for adjusting the parts on the track at any time. 🙌 The surface of hammer head screws is smooth, without sharp edges or burrs, and will not scratch your skin when used. 🙌 T shape stud sliding screw can be used to assemble furniture, install speakers, and casters. It can also be used to assemble cabinets, class A, and greenhouses. Notice: Please confirm the size of your aluminum profile or T-slot when purchasing to ensure it matches the size of our T-bolts. Specification: Material: Stainless Steel Color: Silver Size: M8x20mm Package Includes: 10 X Hammer Head Bolt T Screws 10 X Hexagon Flange Nuts