Master Mechanic, 17 Piece, Lawn Mower Kit, Contains: 1 - Spark Plug Gauge (Gapper), 2-3/8" DR 6 PT Spark Plug Socket, Carbon Steel With Heat-Treated, Size: 5/8", 13/16", 1 - 3/8" DR Ratchet Handle, Carbon Steel With Heat-Treated, Knurled Handle 10 - 1 " Bits, #6150 Sandblasted Finish, 1 - 1/4" DR 2" Extension Bar, Carbon Steel With Heat-Treated, 1 - 1/4" M X 3/8" F Socket Adapter, Carbon Steel With Heat-Treated, 1 - 1/4" Coupler, Carbon Steel With Heat-Treated.