These pumps are specially designed for convenient and accurate dispensing of mixtures of WEST SYSTEM 105 Epoxy Resin® and 207 Special Clear Hardener™ or 209 Extra Slow Hardener™.

The 301 Special Ratio Mini Pumps mount directly on the resin and hardener containers and have been calibrated to deliver the correct working ratio of 3.5 parts by weight of resin to 1 part by weight of hardener with one stroke from each pump.

Warning: do not use 301 Special Ratio Mini Pumps with 205 Fast Hardener® or 206 Slow Hardener®.

If you are using 105 Epoxy Resin with 207 Special Coating Hardener™ or 209 Extra Slow Hardener™:

• use the 301-3A set (3:1 by volume) to fit the A Pack size
• use the 301-3B set (3:1 by volume) to fit the B Pack size
• use the 301-3C set (3:1 by volume) to fit the C Pack size