A unique and compact approach to having extra large screwdriver blades readily available.
Our tool maker designed a chuck holder in which one end fits any tuning lever tip, and the other accepts the four large screwdriver tips. Included are 5/16" and 1/2" slotted blades and a No. 2 and No. 4 phillips blade.
The 2" long chuck holder is nickel platted, the screwdriver blades are black oxided.