TA18 the height of the middle triangle is 1.8mm. Suitable for installation in pneumatic screwdriver, electric screwdriver. 6 Piece Screwdriver Bits. TA20 the height of the middle triangle is 2.0mm. TA23 the height of the middle triangle is 2.3mm.
12 Piece Triangle Head Screwdriver Bits Steel 1/
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12 Pcs Triangle Head Screwdriver Set, Wear Resistant,