20" SDS max Hammer Extension SDS max Extension SDS Extension Shaft with Quick-Change Chuck Adapter, 16-1/4" Effective Reach, 40Cr Alloy Steel, for Deep Concrete Drilling & Hard-to-Reach Areas

【Compatibility (sds max / sds)】This sds max to sds max extension shaft is designed for sds max rotary hammers, compatible with many tools from DeWalt, Bosch & Milwaukee for concrete drilling, demolition, and overhead tasks. Brand names are used for compatibility reference only and do not imply affiliation or endorsement.

【Works with sds max drill bits】Use with compatible sds max drill bits and SDS Max accessories to extend reach for drilling and chiseling—ideal for multi-step jobs where you need extra length without changing your workflow.

【Deep reach in tight spaces (sds plus extension)】If you’re searching for sds plus extension, please note this listing is an sds max extension (SDS Max system). The 20" length and 16-1/4" effective reach help access corners, ceilings, behind pipes, and other hard-to-reach areas.

【Adapter keyword reference (sds adapter / hammer drill adapter)】Keyword reference: sds adapter, hammer drill adapter, sds max to sds plus adapter, sds plus to sds max adapter. This product is a hammer extension / extension shaft; adapters are not included unless specifically stated in the package contents.

【Heavy-duty build + versatile use (hammer extension / sds extension shaft)】Rugged 40Cr alloy steel construction for demanding jobsite use—this hammer extension / sds extension shaft is great for HVAC, plumbing, renovation, and general DIY tasks requiring deeper drilling and better access.

20-inch SDS Max to SDS Max extension shaft with a quick-change chuck/collet adapter for faster accessory swaps on the job. With 16-1/4" effective reach, it helps you drill deeper into concrete and reach tight or hard-to-access areas such as corners and overhead spots. Built from durable 40Cr alloy steel for heavy-duty concrete drilling, chiseling, and renovation tasks.