The KENT Paddles are sold Assembled and as Kits.
SO, Kit instrucitons and spare parts listing (with prices) are available (download) right from their web pages.
R.A. Kent Engineers
Telephone: (+49) (0)17172 36917
Fax: (+49) (0)7541 981433
SPARE PARTS Listing (and prices) for Kent TWIN Paddleshttp://www.kent-engineers.com/twinspares.htm