12PCS PH2 & PZ2 Magnetic Impact Driver Bits Set, 8PZ2 + 2PH2 Screwdriver Bit Sets for Daily Screwdriving Needed with 150 Mm + 100 Mm Extension Bit Holders. TWO POPULAR SIZES: The most commonly used combination of PZ2 + PH2, so you don't have to hunt around for another size of screwdriver head.
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