Standard set.
Set contains:
RB Handle + S20 Blade, red sleeve (for brass & cast iron).
RB Handle + S100 Blade, blue sleeve (for steel & aluminum).
RB Handle + S150 extra fine Blade, yellow sleeve (for plastic).
S20 Blade – BS2010
S100 Cobalt Blade – BS1018
S150 Blade – BK3010