Bosch Professional Zubehör EXPERT Power Change Plus conversion set, HEX shank 11 mm, HSS-G, 7.15 x 45 x 85 mm, 2 adapter nuts

Attaching the centering drill to the adapter has always been a challenging task. This costs professionals time and money. With the Expert Power Change Plus, you can change the centering drills in seconds thanks to Bosch's clever one-click adapter. This keyless system does not need to be secured with screws or bolts. You simply pull out one hole saw and slide another one in. Despite this apparent simplicity, the Expert Power Change Plus provides a secure connection: with a reinforced shaft and a precisely fitting guide drill, it has even less play than conventional systems. With the adapters in this set, you can use standard hole saws with diameters of 14–30 mm (1/2"-20UNF thread) and 32–152 mm (5/8"-18UNF thread) with Bosch Power Change Plus.