Bosch countersink set 8 10 12mm tool steel straight shank 6mm 3 pcs bosch 2609255124 p this countersink set from bosch has 3 individual countersinks 8 10 and 12mm in diameter with 6mm straight shanks p bosch 2609255124 countersink set 8 10 12mm tool steel straight shank 6mm 3 pcs