# SDS-max — Power tool battery and accessory compatibility For SDS-max, system is drill bit shank; platform owner is Heller; subject type is shank interface; compatible with is for hammer drills > 5 kg, recorded from its source on 2026-08-11. - **System:** drill bit shank _(our reading, not quoted from the source)_ - **Platform owner:** Heller _(our reading, not quoted from the source)_ - **Subject:** SDS-max _(verified: appears in the quote below)_ - **Subject type:** shank interface _(our reading, not quoted from the source)_ - **Compatible with:** for hammer drills > 5 kg _(verified: appears in the quote below)_ ## What the source says > SDS-max Cylindrical shank, 18 mm in diameter, two round grooves for axial fixation, three wedge grooves to transfer torque; for hammer drills > 5 kg ## Source - https://www.hellertools.com/en/service/shanks Last verified: 2026-08-11. Review by: 2027-08-11. Part of [Power tool battery and accessory compatibility](https://referencesource.org/power-tool-battery-accessory-compatibility/).