• The 453, 454, and 455 aluminum oxide chainsaw sharpening stones are ideal to sharpening 1/4", 3/8", 3/8" low profile, and .325" chains. • Compatible with Dremel Rotary Tool models 8220, 8100, 7760, 4300 (use with collet & collet nut), 4000, 3000, 200 Series, 100 Series
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