Overview Product Description Double set screw with Allen wrench. Recommended for all 1/4'' round shank drill bits requiring extra reach. Follows 5/8'' and larger bits through hole. 1/4'' shank. Pouched. Only fits round shank Speedbor or Do it Best brand bits. Product Videos Custom Field Product Reviews Write a Review Write a Review × Irwin 88601 Speedbor Woodboring 12"" Bit Extension Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *
Quick view Details sku: 1882784 Irwin Tools 1882784 SPEEDBOR Countersink Wood Drill Bit, Number-12 MSRP: Now: $4.86 Qty:5 Add to Cart Quick view Details sku: 1882790 Irwin Tools 1882790 SPEEDBOR Countersink Wood Drill Bit, Number-12 Replacement Bit MSRP: Now: $3.35 Qty:124 Add to Cart Quick view Details sku: 49613IR Irwin Speedbor 49613 Brad Point Drill Bit, 3/16" MSRP: $6.80 Now: $1.60 Qty:549 Add to Cart Quick view Details sku: 3015030 Irwin Speedbor, 15/32" Titanium Coated Drill Bit (3015030) MSRP: Now: $2.79 Qty:3 Add to Cart Quick view Details sku: 1882789 Irwin Tools 1882789 SPEEDBOR Countersink Wood Drill Bit, Number-10 Replacement Bit MSRP: Now: $3.25 Qty:64 Add to Cart ×
Quick view Details sku: 1882790 Irwin Tools 1882790 SPEEDBOR Countersink Wood Drill Bit, Number-12 Replacement Bit MSRP: Now: $3.35 Qty:124 Add to Cart Quick view Details sku: 49613IR Irwin Speedbor 49613 Brad Point Drill Bit, 3/16" MSRP: $6.80 Now: $1.60 Qty:549 Add to Cart Quick view Details sku: 3015030 Irwin Speedbor, 15/32" Titanium Coated Drill Bit (3015030) MSRP: Now: $2.79 Qty:3 Add to Cart Quick view Details sku: 1882789 Irwin Tools 1882789 SPEEDBOR Countersink Wood Drill Bit, Number-10 Replacement Bit MSRP: Now: $3.25 Qty:64 Add to Cart ×
Quick view Details sku: 49613IR Irwin Speedbor 49613 Brad Point Drill Bit, 3/16" MSRP: $6.80 Now: $1.60 Qty:549 Add to Cart Quick view Details sku: 3015030 Irwin Speedbor, 15/32" Titanium Coated Drill Bit (3015030) MSRP: Now: $2.79 Qty:3 Add to Cart Quick view Details sku: 1882789 Irwin Tools 1882789 SPEEDBOR Countersink Wood Drill Bit, Number-10 Replacement Bit MSRP: Now: $3.25 Qty:64 Add to Cart ×
Quick view Details sku: 3015030 Irwin Speedbor, 15/32" Titanium Coated Drill Bit (3015030) MSRP: Now: $2.79 Qty:3 Add to Cart Quick view Details sku: 1882789 Irwin Tools 1882789 SPEEDBOR Countersink Wood Drill Bit, Number-10 Replacement Bit MSRP: Now: $3.25 Qty:64 Add to Cart ×
Quick view Details sku: 1882789 Irwin Tools 1882789 SPEEDBOR Countersink Wood Drill Bit, Number-10 Replacement Bit MSRP: Now: $3.25 Qty:64 Add to Cart