DEHUI TOOLSPGM-certified drill bits · since 1985

Buyer's Guides

Drill bit sourcing guides

Written by the factory, not a content agency: how SDS Plus differs from SDS Max, what PGM certification tests, which carbide head to specify, and real MOQ and lead-time numbers.

SDS Plus and SDS Max hammer drill bits side by side showing the 10 mm and 18 mm shanks

Buyer's Guide

SDS Plus vs SDS Max: Which Shank Do You Actually Need?

SDS Plus (10 mm shank, 4–32 mm bits) runs on 2–4 kg rotary hammers; SDS Max (18 mm shank, 8–40 mm bits) on 5–12 kg hammers. A drill bit factory explains the real differences, compatibility, and how to buy the right mix.

Updated Oct 23, 2026

PGM certification documents for Dehui Tools SDS hammer drill bits and impact drill bits

Certification

What Is PGM Certification and Why Should Drill Bit Buyers Care?

PGM (Prüfgemeinschaft Mauerbohrer e.V.) is the German test mark for masonry drill bits: hole diameter tolerance, carbide tip symmetry, drilling life, continuous monitoring. What it covers, what it doesn't, and how to verify a supplier's claim.

Updated Oct 23, 2026

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Have a size list or a photo of what you buy today? Email it to sales@dehui-tools.com or WhatsApp after submitting — we match sizes and quote FOB within 24 hours.

PGM-certified factory · MOQ 100–200 pcs per size · Free samples · Reply within 24h

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