rigid shank

rig·id shank

(rij'id shank)
Larger diameter instrument shank to withstand pressure needed to remove heavy calculus deposits.
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References in periodicals archive ?
Featuring smaller blades honed at a 60-degree angle and with a modified, specially designed rigid shank, the curettes allow easier access and easier insertion under tight tissue.
All have rigid shanks that meet the DIN 6595/ISO 9766 standard.
Buy shoes that fit and have shock-absorbent soles, rigid shanks, and some extra padding in the heels.