1/4-20 Thread roll-in T-nut with flex handle. install from either the profile ends or side, which is helpful in applications where the ends are inaccessible. Rubber flex handle protrudes out past the profile, easy to position and move within the T-slot. Works with 10 Series (1") Aluminum t-slot profiles. Compatible with 8020: 3791. 48-Pack, Bright Zinc Finish