For Threaded bits, outside square f. Robertson screws we offer these articles Bit Square Head, RB 01, M 5, L 45 mm Art-No. 1540-01-60-45 Price/Unit net: EUR 8,03 Add to Basket: Details » Fast and Easy Inquiry » Bit Square Head, RB 02, M 5, L 45 mm Art-No. 1540-02-60-45 Price/Unit net: EUR 8,03 Add to Basket: Details » Fast and Easy Inquiry » Bit Square Head, RB 03, M 5, L 45 mm Art-No. 1540-03-60-45 Price/Unit net: EUR 8,03 Add to Basket: Details » Fast and Easy Inquiry »