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 5 PK Grinding Wheels Type 27 – Zirconia 7″ x 1/4″ x 7/8 – 24 Grit $79.26 Part Number: 12642Add to Cart 10 PK Grinding Wheels Type 27- Zirconia 7″x 1/4″ x 5/8″-11 – 24 Grit $183.43 Part Number: 12644Add to Cart 9″ Type 27 Aluminum Oxide Grinding Wheel – 1/8″ x 5/8″-11, 24 Grit $11.76 Part Number: 12689Add to Cart 1 PK | 5″ Type 27 Aluminum Oxide Grinding Wheels Depressed Center – No Hub – 24 Grit – 5″ x 1/4″ x 7/8″ $5.07 Part Number: 12736Add to Cart