Features:Up to 5x faster than Bosch 2609390034 ArborHigh Speed changing hole saws and drill bitsEnjoy maximum efficiency with a Bosch Quick Change system: our innovative mechanical developments for changing accessories.Attach and remove hole saw and pilot drill with one click. This keyless system requires no screws or bolts and still gives a firm connection.Designed for fast and easy plug removal. The pilot drill bit can be used to push the plug out quickly and smoothly.Takes a full range of hole saws, 14 mm to 210 mm. Unlike most arbors, it takes the largest and smallest sizes.Reinforced shank transition for longer shank life. A rounded shank and special reinforcing process eliminate stress concentrators to avoid premature breakage.For use with the Bosch Power Change Plus keyless arbor: offering accuracy and robustnessHole saws are a great accessory, but attaching them to your drill was always a fiddly job to do accurately. This costs professionals time and money. With the EXPERT Power Change Plus, you can switch hole saws in seconds thanks to Bosch’s clever one-click arbor.This keyless system does not require fixing with screws or bolts. You just pull one hole saw out and push another in. Despite this apparent simplicity, the EXPERT Power Change Plus still gives a firm connection: with a reinforced shank and close-fitting guide drill, it actually has less play than conventional systems.The Bosch EXPERT Power Change Plus Hole Saw System is designed to give hole saw users the best connection with the maximum efficiency. It will save you time and perform the roughest tasks to a high standard.