You might also be interested in these router collet nut.
Big Horn 19694 1/2" Router Collet Replaces Porter Cable 42950 | Precision Routing Accessory | Durable Metal Construction | Secure Bit Retention | Helps Maintain Routing Accuracy
Big Horn
£ 12.81
free shipping
To the product (1 offer)
Router Collet Nut Replacement 2pcs Set, Metal Plunge Router Accessories with 12.7mm Center Hole and 1/2 Inch Half Inch Router Collet Size, Durable Router for Spare Parts for
1/4",1/2",12mm Router Collet And Nut Set For Dewalt DW6214 DW618 | For Dewalt DW6214 DW618 Router with Reducer Sleeves 1/2"-3/8", 12.7mm-6mm, 12.7mm-8mm
VIGORVIL
£ 25.10
free shipping
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Oiieco 6PCS Router Collet Chuck Set, 6mm,6.35mm(1/4"), 8mm Steel Collet Adapter with 2 Nuts, Compatible with KATSU Routers and Selected Makita Trim Routers for Milling Cutter,Engraving,Wood Trimming
Oiieco
£ 5.99
free shipping
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18% off
Makita 193178-7 Collet Cone and Nut Set 8mm
Makita
£ 15.13
free shipping
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8 Pieces High Precision Die Grinder Collet Set with Nut, 6mm 1/4" 8mm Router Bit Collet Chuck Clamping Adapter for Woodworking Engraving Trimming Machine Electric Router Milling Cutter
ArtisanShow
£ 8.99
free shipping
To the product (1 offer)
sourcing map 2pcs Collet Adapter 8mm Carbon Steel Trimmer Router Collet Reduction with M15 Nuts Sleeve Tool Bit Shank Router Conversion Chuck Adapter for Woodworking CNC Engraving, Black
sourcing map
£ 6.49
free shipping
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TOP-VIGOR 2 Pcs ER11-A(M14) Collet Clamping Hex Nut, M25 x 0.75mm Thread, 9mm Bore, Precision Ground Cast Steel Collet and Nut Set for CNC Milling Chuck Holder Lathe Tooling