Click to expand Tap to zoom Irwin TR850 Rose Countersink Drill Bit by Irwin Sale ₱420.00 | / - 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart IRWIN® TR850 Rose Countersink Drill Bit Catalog No: TR850/-3/8Size: 3/8" x 1/4" Carbon Steel