Made in the USA. These are heavy-duty industrial masonry drill bits designed to be used in the larger spline drive rotary hammer drills. These bits are used in Bosch (#11202, 11203, 11204, 11205, and 11209), AEG (# 240D, PH 350, and PH 350D), Milwaukee (# 5343 and 5347), and the B & D Macho (#5041, 5042, 5043 and 5044), Metabo (#RH 66, and RH 99X), Hitachi (#dh 38 VA), Ryobi (#ED 382P), and ITT Phillips (#747-2).
 
Product ID:
3551 - 3/8” x 12” Spline Masonry Bit
3552 - 3/8” x 18” Spline Masonry Bit
3553 - 1/2” x 12” Spline Masonry Bit
3554 - 1/2” x 18” Spline Masonry Bit
3555 - 9/16” x 12” Spline Masonry Bit
3556 - 9/16” x 18” Spline Masonry Bit
3557 - 5/8” x 12” Spline Masonry Bit
3558 - 5/8” x 18” Spline Masonry Bit
3560 - 3/4” x 12” Spline Masonry Bit
3561 - 3/4” x 18” Spline Masonry Bit
3563 - 7/8” x 12” Spline Masonry Bit
3564 - 7/8” x 18” Spline Masonry Bit
3566 - 1” x 12” Spline Masonry Bit
3567 - 1” x 18” Spline Masonry Bit
3569 - 1 ¼” x 18” Spline Masonry Bit
3570 - 1 ¼” x 23” Spline Masonry Bit
3571 - 1 ½” x 18” Spline Masonry Bit
3572 - 1 ½” x 23” Spline Masonry Bit