Wera Bit-Check 12 Diamond 1 Screwdriver Bit Set 12 Pieces Diamond Coated PH PZ TORX 1/4 inch Holder
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Wera
Wera Bit-Check 12 Diamond 1 Screwdriver Bit Set 12 Pieces Diamond Coated PH PZ TORX 1/4 inch Holder
€49.66 inc. VAT
05057421001
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Wera Bit-Check 12 Diamond 1 — 12-Piece Diamond-Coated Bit Set
12 PiecesDiamond-Coated TipsBiTorsion ZoneRapidaptor Holder Included
Bit-Check 12 Diamond 1 is the compact diamond-coated assortment: eleven BiTorsion 25 mm bits — PH 1 and two PH 2, PZ 1 and two PZ 2, and TORX TX 10 through TX 30 — plus a 889/4/1 K Rapidaptor universal holder that counts as the twelfth piece. The BDC diamond coating bonds microscopic diamond particles to the tip so it bites into the screw recess, which cuts cam-out and the feed pressure needed to keep the bit seated. Behind each tip a BiTorsion zone absorbs load peaks instead of passing them to the tip, where bits break. The case stands upright on a bench so the set is always to hand. Typically in stock with fast delivery across Cyprus.
Compatibility — check before buying:
Profile coverage is Phillips, Pozidriv and TORX only — there are no slotted, hex, square, TORX PLUS or tamper-resistant bits, and no PH 3 or PZ 3. TORX runs TX 10 to TX 30. Because PH 2 and PZ 2 are doubled, the set covers nine distinct profiles, not eleven. These are not impact-driver bits — BiTorsion is a torsion zone for load peaks, not an impact rating. Nothing is insulated. The diamond grit is aggressive and will mark soft, plated or decorative screw heads.
Best For
✓ Repetitive driving where cam-out costs time
✓ Machine-screw and cabinet assembly
✓ Compact service and van kits
✓ Restocking worn PH 2 and PZ 2 bits
Key Features
Diamond-Coated BDC Tips
Microscopic diamond particles bonded to the tip grip the inside of the recess. Less cam-out means less damage to the screw head, less feed pressure on your arm and fewer ruined fixings.
BiTorsion Zone Behind the Tip
A torsion zone absorbs load peaks before they reach the tip, which is where bits shear. It is the reason a BiTorsion bit outlasts a plain hardened bit on the same screw.
Doubled PH 2 and PZ 2
Two of each of the sizes that wear out first, so the set stays useful rather than leaving you with a full case and one dead PZ 2. Eleven bits, nine distinct profiles.
Rapidaptor Holder Included
A 889/4/1 K universal holder, 1/4 inch x 50 mm, with a permanent magnet, free-running sleeve and one-handed quick change that self-locks on contact with the screw — supplied as one of the twelve.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
A twelve-bit case is a carry set rather than a restock, and the choice worth understanding is the diamond coating: it is a grip aid, not a hardness upgrade. On soft or painted heads it genuinely stops the bit walking out, which is where screws get ruined. The trade-off is that the same grit marks decorative fixings, so keep a plain bit for anything visible. Note also that PH 2 and PZ 2 are doubled, so the profile spread is narrower than the piece count suggests. Browse our Cable Tools - Testers category for more Wera bits and sets, or the wider Cables range for related workshop supplies.
Buyer’s Guide
Buy it if
You want a pocket-sized diamond-coated bit set covering the everyday Phillips, Pozidriv and TORX sizes with a holder included.
Skip it if
You need slotted or hex bits, impact-rated tooling, or deeper quantities for a workshop restock.
Also consider
The Bit-Check 30 Diamond 1 (05057431001) for a 30-piece set including slotted, or the Bit-Safe 61 Universal 3 (05057127001) for far wider profile coverage.
Features - Wera - 05057421001
More Details
Product Code
04:518172
EAN Code
4013288180025
Manufacturer
Wera