The SPBL stands for Spear Point Barbless; the hook features a hollowed curve point with triangular edges.
Fundamental fly tying - part 2: Hooks
Rich Strolis Fly Tying Tutorial: Classified Caddis – Thomas & Thomas
Muškařský háček Tiemco TMC 2499 SP-BL #12-18
tiemco TMC 2499SP-BL Copper John, Scud, Caddis Larvae Hook
How to Tie: Ray Schmidt Rattle Snake, Flys and Guides
Color: Bronze, Black, Size: 06, 08, 10, 12, 14, 16, 18, This hook was designed based on the TMC2488 but features 2X heavy wire for added strength and
TIEMCO HOOK - TMC 2499SP-BL
Umpqua Tiemco Fly Tying Hooks TMC 2499Sp-Bl (100Pk) 12 : Fishing Hooks : Sports & Outdoors
TIEMCO 105 STRAIGHT EYE EGG HOOK 10
Super Point, Round, Straight Eye, 2X Heavy, 3X Wide, 2X Short, Curved Shank, Forged, Barbless, Bronze
Umpqua Feather Merchants Tiemco TMC 2499 SPBL
Tiemco TMC2499SP-BL — The Flyfisher
Dry Fly & Nymph, Straight eye SPR Point (Super Point), Barbless 2X Heavy, 3X Wide 2X Short curved shank Forged, Bronze
Umpqua Tiemco Fly Tying Hooks TMC 2499Sp-Bl (100Pk) 12
How to Tie: Ray Schmidt Rattle Snake, Flys and Guides
Hooks for Tenkara Flies
Video] Pale Morning Dun Patterns