Double end replacement bits for Best Way Tools 11 in 1 screwdriver nut driver model No. 20100. Can also be used with Best Way Tools 10 in 1 screwdriver model No. 88103 and Klein Tools 10 in 1 screwdriver nut driver model No. 32477. No. 88400: No. 1 Phillips x 3 16" slotted, No. 2 Phillips x 1 4" slotted No. 88401: T15 x T20 Torx, No. 1 square recess x No. 2 square recess No. 88402: No. 3 Phillips x 9 32" slotted No. 0 Phillips x 1 8" slotted