Simple	5.76	
Double  4 mm	3.59
Double  6 mm	3.28
Double  8 mm	3.09
Double  9 mm	3.02
Double 12 mm	2.86
Double 15 mm	2.76
TRIPLE  4 mm	2.61
TRIPLE  6 mm	2.29
TRIPLE  8 mm	2.11
TRIPLE  9 mm	2.04
TRIPLE 10 mm	1.99
TRIPLE 12 mm	1.9