Barlows (size/weight-lbs) 

2x Barlow	1¼" / 0.30
2x BIG Barlow	2" w/1¼" adapter / 0.75
3x Barlow	1¼" / 0.40

Powermates & Barlows
BLW-2125	2.0x Barlow 1¼”
BWC-2211	2.0x BIG Barlow 2"
BLW-3125	3.0x Barlow 1¼”