6061 SL Butted Aluminium. There are a few age related marks as expected from a used mountain bike. 20" centre of bottom bracket to top of the seat tube. 17 1/2" centre ofbottom bracket to centre of top tube.

Brand: GT
Wheel Size: 26 in
Department: Unisex Adult
Compatible Bike Type: Mountain Bike
Material: Aluminium, Chromoly, Steel
Set Includes: Frame Only
Number of Items: 1
Colour: Silver
Frame Size: 20"
Part Type: Bicycle Frame