- MAGDRILL 75MM EXTENSION ARBORSpecial Price £79.95 £95.94MAGDRILL 50MM EXTENSION ARBORSpecial Price £59.95 £71.94MAGDRILL 25MM EXTENSION ARBORSpecial Price £49.95 £59.94Rotabroach Extension Arbor 25mmSpecial Price £82.36 £98.83Rotabroach Extension Arbor 50mmSpecial Price £96.08 £115.30Rotabroach Extension Arbor 75mmSpecial Price £111.53 £133.84Rotabroach Extension Arbor 100mmSpecial Price £111.53 £133.84Rotabroach Extension Arbor 150mmSpecial Price £117.25 £140.70Rotabroach Extension Arbor 200mmSpecial Price £210.47 £252.56Rotabroach Extension Arbor 250mmSpecial Price £238.86 £286.63