Ratcheting Screwdriver Kit - 7 Functions Make a useful, convenient, and beautiful handle for this patented ratcheting screwdriver mechanism. The 7 function set includes: 2 reversible PH 2 bits (4 functions), remove the bits and shaft to expose drivers for 1/4", 5/16, and 7/16" hex nuts (3 functions). Use a blank at least 5-1/2 " long by 2" square. Drill a holed 3/4" and 7/16" dia to seat the mechanism. Turn the handle between centers. (7) functions include (3) Hex Openings at 1/4", 5/16", 7/16"; (2) Flat Head Screwdriver Hex Shafts at 1/4" and 5/16"; (2) Phillips Head Screwdriver Hex Shafts at 1/4" and 5/16" Make Your Own Cool Tool! High-Quality Mechanism Required drill bit sizes: 7/16" and 3/4" This is a Turn-Between-Centers woodturning project kit The minimum handle blank size needed to turn is 2" x 2" x 5-1/2" Kit Includes - Reversible ratcheting mechanism (blank not included) 2-sided tool holder w/ hex drives 1/4” & 5/16" Additional 7/16” hex drive One each flathead and Philips head drive 5/16” & 1/4” Instructions Instructions Ratcheting Screwdriver Kit - 7 Functions