Dust extraction spout. Solid hardened bushes with fixed pitch of 30mm. Dust spout ID 30 mm. Hole pitch 30 mm. AB, BT, HS, FK, GY, IM, IV, J, KA, KW, PA, PH, TR, ZE. Square drive self tapping screws for use with a No.2 square drive bit to resist slipping (cam out).
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