205 is a general purpose hardener used in a majority of situations for bonding and coating situations. It is best suited for cooler temperature situations (Room Temp and below). 205 hardener provides a faster cure at lower temperatures. Order Product Guide for more info. Use this size "B" with all size "B" West System products to minimize usage and ordering confusion. Pot Life 9-12 Min at 72 F Cure Time 6-8 Hr at 72 F Min Working Temp 40 F Availability: Usually ships in 2-3 business days. 205-B West System Fast Hardener - 27.5 oz 205BList price: $37.55Our price: $29.95 ©2008 Public Lumber Company. All rights reserved.