Superior Electric RC025DW 1/4" Router Collet Replaces Dewalt 326286-04 & Bosch 2610906283. The collet is slotted on 8 sides. The longer length minimizes run out and reduces vibration. Fits: Dewalt: DW616D Type 1 DW616 Type 1 DW616M Type 1 DW616P Type 1 DW616S Type 1 DW618B3 Type 1 DW618B3E Type 1 DW618D Type 1 DW618 Type 1 DW618M Type 1 DW618P Type 1 DW621 Type 1 DW621 Type 2 DW621-220 Type 1 DW621 Type 3 DW618PKB Type 1 Bosch: 1617EVS 1604A 1606A 1613 1613AEVS 1613EVS 1617 1618 1618EVS 1619EVS B1350 B1450 16171 16176 16181 16186 13020 1604A 1606A 1613AEVS 1649 MRF23EVS WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov.