The Wolf Tooth Precision Headset Spacers Are Handcrafted In The USA From Premium-grade Anodised Aluminium. If You\'re Looking To Add Some Extra Vibrancy To Your Ride, Look No Further. This 5 Pack Comprises Of 5 Identical Spacers Of The Colour And Size Of Your Choice.Including Nifty Measurement Details On The Top Edges For Ease Of Set Up And Perfectly Paired With Wolf Tooth Precision Headsets, These Are A Must-have.Key Features:Handcrafted By Wolf Tooth In Minneapolis, USA,1 1/8\" Top (Straight 1 1/8\" Or 1 1/2\" To 1 1/8\" Taper) Steerer Tubes Only,6061-t6 Aluminium,Options: 3mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm,5 X Identical Spacers Of Size And Colour Of Your Choice,Weight: 3mm - 2g , 5mm - 3g, 10mm - 5g, 15mm - 7g, 20mm - 9g, 25mm - 11g, 30mm - 13g.