Bits have knife edge spurs and no points.
No. 1-28 Hollow Chisel Bits
Stock Number
Size
Bits
Twist Lgth.
O.A. Lgth.
Dia.
Length
1-280250
1/4
3/16
5-3/4
3-1/4
9
1-280312
5/16
1-280375
3/8
19/64
3
6
1-280500
1/2
1-280625
5/8
1-280750
3/4
1-281000
1
chisels and bits sold separately
No. 1-27 Hollow Chisel Bits
1-270250
4-3/4
8
1-270312
1-270375
1-270500