The 271-33 is the replacement blade for the Silky Zubat 330 (270-33), the curved professional pruning saw and Silky's best seller.
It's the same 330 mm (13 in) curved blade the saw comes with: taper ground and hard chrome plated against rust and tree resin, with non-set, impulse-hardened teeth at 7.5 per 30 mm (about 6.5 TPI), ground with four cutting angles for fast, smooth cuts. The blade is 1.4 mm thick and cuts a 1.5 mm kerf. When the teeth dull, fit a new blade and keep your handle and sheath.
Katsuji Miyawaki founded Silky in 1919 in Kishi, Japan, under the brand Tamakitsune, and all of its saws took the Silky name in 1983. The company is now headed by Uichi Miyawaki, and its saws are made in Ono, Japan.