8 ounces (1/2 lb) of hide glue crystals.  As with the vast majority of my auctions, this item is in stock and ready to ship and goes out no later than the next business day - often the same day if ordered by noon.

I've used this hide glue for many, many years for all types of piano and player piano repair.  Gluing felt to wood, wood to wood (for joints like jack flange to wippen that may need separating years later) rubber pneumatic cloth to pneumatics, gaskets to various player parts, etc. etc.  Great glue, sets quickly.  Use with a glue pot. For the initial overnight soak (I use a glass jar filled about halfway up and punch a hole the size of my glue brush in the lid that came with the jar and that allows me to keep it covered when not in use) I fill the jar up about halfway and add enough water to just cover the glue crystals.

Why use hide glue? It's been used for hundreds of years, tacks up quickly, holds well and if you ever need to reverse it a little moisture and heat will separate parts with little or no damage - that pretty much doesn't happen with modern glues.  If you glue down some felt and for whatever reason need to change it later it can be removed using the aforementioned technique and the glue residue sanded or scraped away.  Modern glues usually do not scrape well or sand without gumming up.

Instructions from the distributor:

• Highest  quality, made from fresh, selected animal trimmings.
• For best results, soak glue overnight.  In morning, cook glue under 100 degrees Fahrenheit for 30 minutes; then, turn heat up to 150 degrees.
• Keep glue cooker well covered to prevent evaporation.

I've been a full time piano technician for over 30 years - if you have any questions please ask - I'm glad to help.