Universally known for a fast effective repair.
Width 2"
Length 15'

Sail Repair application
Before we look at the tapes here is a quick application guide; 
To apply the tape find a flat smooth surface, sharp scissors, and a helping hand 
Clean the torn area with fresh water or alcohol 
Trim the frayed edges. 
Stretch out the sail and secure in place with pins or Awls 
Once sail is laid flat and stabilized apply the tape