Starrett BMA4250 250mm Extension bar for Core Drills

Starrett BMA4250 250mm Extension Bar Rod, Screws onto the BMA1 (115mm Long) or the BMA1240 (240mm Long) Hexagon Adaptors, this Increases the Drilling Length by an extra 250mm e.g. fitted to the BMA1(115mm) now extends the Adaptor to 315mm and to the BMA1240(240mm) to 490mm. The Core Cutter Blade screws onto the end of the BMA4250 Extension Bar Rod