Plus (+) spare parts can enlarge dirll diameter up to 0.197".
Larger sizez quoted upon request.
Heads larger than 3.622" have an extra guide pad and filler. These heads may also be used for counterboring if the filler is replaced with a third guide pad and protector.
STS => KUSTS20E-4.567" 1 Set
DTS => KUDTS08E-4.567" 1 Set*
*Lengths may vary for DTS Drill Heads