Home / Abrasives and Finishing Products / Surface Prep/Sanding / Grinding Wheels / 100 PK Depressed Center Type 27 Grinding Wheels – Hubless. 4″ X 1/4″ X 5/8″ 24 Grit 100 PK Depressed Center Type 27 Grinding Wheels – Hubless. 4″ X 1/4″ X 5/8″ 24 Grit $222.52 Part Number: SDP404-100 Vitrified, aluminum oxide double fiberglass reinforced wheels designed for strength and cutting action when working on steel and non-ferous metals. 100 PK Depressed Center Type 27 Grinding Wheels - Hubless. 4" X 1/4" X 5/8" 24 Grit quantity Add to cart UPC: 682488076786 Category: Grinding Wheels Tag: 4" x 1/4" x 5/8" Related products 10 PK Grinding Wheels Type 27- Zirconia 9″x 1/4″ x 5/8-11NC – 24 Grit $242.59 Part Number: 12646Add to Cart 25 PK | Depressed Center Type 27 Grinding Wheels for use on Masonry 4.5″x 1/4″ x 7/8 $89.73 Part Number: 12745Add to Cart 10 PK 7″ Type 27 Aluminum Oxide Grinding Wheel – 1/4″ x 7/8, 24 Grit $61.85 Part Number: 12741Add to Cart 25 PK Depressed Center Type 27 Grinding Wheels for use on Masonry 4″x 1/4″ x 5/8 $84.16 Part Number: 12743Add to Cart