L L1 D L1 L D D1 Chucking Dia. D L L1 Spanner 4.016 4.606 4.606 3.543 4.134 4.134 FC13LC FC13LC FC13LC Part Number 0.020 - 0.512 0.020 - 0.512 0.020 - 0.512 1.969 1.969 1.969 BT30-KLD13- 90 BT40-KLD13-105 BT50-KLD13-105 Chucking Dia. D L L1 Spanner 4.606 4.606 4.134 4.134 FC13LC FC13LC Part Number 0.020 - 0.512 0.020 - 0.512 1.969 1.969 D1 1.750 2.750 CAT40-KLD13-105 CAT50-KLD13-105 Feature Integral shank design allows the use of a spanner wrench providing up to 4 times more gripping force than conventional Jacobs taper drill chucks. Integral shank design eliminates separation of the r.chuck from the arbo Increased gripping force minimizes drill breakage after material penetration. Integral shank design provides improved accuracy. CAT BT Ordering Example CAT40-KLD13-105 Spanner is sold separately.