Teng 7Pc Double Open End Spanner Set 1 4 1 1 4in TC SC Active Feedback Technology sensors N GBS207 30NW4 Active Feedback Technology sensors shut down the tool in the event of a kickback (3 of each) 6707AF Teng 7pc Double Open End Spanner Set 1 4 1 1 4in 7 piece AF double ring spanner set All the most commonly used AF sizes from 1 4 to 1 1 4 inone handy set Different size at each end to give 14 sizes in total Double curved heads offset at 75° for easier use on flatsurfaces Chrome vanadium satin finish Teng Tools hip grip design for contact with the flat sideof the fastening for reduced damage and use on rounded nutsand bolts Supplied in a handy tool roll style wallet Designed and manufactured to DIN3110 and DIN3113A Sizes: 1 4 5 16 3 8 7 16 7 16 1 2 13 16 7 8 15 16 1 1 16 1 1 1 8 1 1 8 1 1 4