This is the screw thread tip, not Slip Tip style. Please let me know if you have a few available to me. Thanks.
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Lindsey Crawley
Lab Manager
Laboratory of Renewable Resources Engineering
Department of Ag. and Bio. Engineering
http://engineering.purdue.edu/ABE
Potter Engineering Center, Room 333
500 Central Dr.
Purdue University
West Lafayette, IN 47907
(765) 494-7052 Lab Phone
www.purdue.edu/giantleaps