sku # ST-ZON113550
Columbus Tubing Zona 29er externally butted seat tube for steel bicycle frames - 28.6 dia. - .8/.6/1.2 wall thickness. Length = 550
310g - Weight is based on a representative tube. Actual weight may vary slightly.
Please see tube graphic (in the image gallery for this product) as a guide for the following specs.
OD=28.6 W1=.8* WC=.6 W2=1.2 L1=245 T1=40 LC=150 T2=40 L2=75
* Thickness can be 1.05mm in the first 15mm of W1
If an item is damaged or has been sent in error, we will replace it and pay for return shipping if item is returned within 30 days of time of purchase. If you ordered the wrong item or changed your mind, you can return it within 30 days of time of purchase and be refunded the purchase price minus a 10% restocking fee.