New torsional anti-backlash lead screw nuts from Helix Linear Technologies. Zero Backlash, sizes 4mm - 25.4mm. Flanged and threaded mount designs. call 855-435-4958 www.helixlinear.com
Precision Torque Splines from Helix Linear. 1/4", 3/8" and 1/2" diameters. Standard and anti-backlash bushings. Splines are coated with H4X Teflon dry lubricant.