Extralite Black Lock QR12 (rear)

The world’s lightest 12mm skewer

A new way to Block

- Weight: 29g
- Rear skewer, for 12mm axle
- Axle: Al 7075 T6 CNC
- Special: Bronze self lubing washer
- Graphics: laser etched
- Extremely light thru-axles
- Weights: 28.8gr (Ethru), 29.1gr (X12), 29.9gr (Maxle), 28.9gr (Scott), 27gr (Scott Road pre 2020), 29gr (Scott road 2020), 28gr (Trek Emonda), 31gr (Sram UDH)

Their unique design ensures a prefect function with a well balanced dimensioning.
The notched area of the thread get reinforced by the allen groove and locking/tightening forces do not affect the axle with useless torsional stress.
Machined with Extralite usual Extra-care, makes you save up to 50g!
The bronze washer adds a smooth action, a tricky nice touch.
Black Lock are supplied separately from Extralite wheelsets.

100% made in Italy

Specs Ethru :
-total length (from under axle head to end of thread) : 172mm
-Thread length: 18.3mm
-Head shape: flat
-Thread type: M1.5 (i.e. 10 threads have a 15mm length)

Specs Maxle:
-total length (from under axle head to end of thread) : 176mm
-Thread length: 19.2mm
-Head shape: flat
-Thread type: M1.75 (i.e. 10 threads have a 17.5mm length)

Specs X12:
-total length (from under axle head to end of thread) : 161mm
-Thread length: 17.2mm
-Head shape: conical
-Thread type: M1 (i.e. 10 threads have a 10mm length)

Specs Scott Road pre 2020:
-total length (from under axle head to end of thread) : 158mm
-Thread length: 13mm
-Head shape: flat
-Thread type: M1.5 (i.e. 10 threads have a 15mm length)

Specs Scott Road 2020:
-total length (from under axle head to end of thread) : 168mm
-Thread length: 13mm
-Head shape: flat
-Thread type: M1.5 (i.e. 10 threads have a 15mm length)

Specs Trek Emonda:
-total length (from under axle head to end of thread) : 166mm
-Thread length: 19mm
-Head shape: flat
-Thread type: M1.75 (i.e. 10 threads have a 17.5mm length)

Specs Sram UDH:
-total length (from under axle head to end of thread) : 185mm
-Thread length: 15mm
-Head shape: flat
-Thread type: M1 (i.e. 10 threads have a 10mm length)