This TCT two wing slotting cutter is ideal for biscuit jointing sizes The set is supplied with 3 ball bearing guides to suit the three sizes of biscuits available. A slighlty longer cut than the length of the biscuit is required for ease of alignment during assembly Supplied with instructions. No. 0 - 45 mm x 15 mm x 4 mm Suitable for 8-12 mm boards Use bearing B19A 9.05 mm depth No. 10 - 53 mm x 19 mm x 4 mm Suitable for 13-18 mm boards Use bearing B16A 10.6 mm depth No. 20 - 58 mm x 23 mm x 4 mm Suitable for 19 mm + board Use bearing B127A D1 37.2 mm Cut length 4 mm B 12.7 mm B2 16.0 mm B3 19.0 mm Shank = 1/4in TREC15214TC