The Glover needles are a heavy needle with sharp triangular points that easily pierce leather. They are a specifically designed for sewing hides (commercial or brain-tanned).
Glover needles - Size 7 - Tribal Spirit
Positioning Needle for Hand Sewing Leather, 12mm Needle
Leather Needles Hand Sewing, Needles Curved Sew Leather
Colonial Glovers Leather Hand Needles - Size 3, 5, 7 - 3/Pack - WAWAK Sewing Supplies
Buckstitch Needles Class 3 or 4 – Traditions Leathercraft LLC
These are sharp three-sided needles for hand-stitching leather There is no need to pre-punch holes Has a razor sharp triangular tip Glovers needles
John James Glovers Needles, Size 7
John James Glovers Needles, Size #12, 29.5mm in Length and 0.41mm in Diameter, Pack of 25, Triangular Point, Ideal to Pass Through Tougher Materials Such as Leather, Suede, Vinyl and Soft
Bulk Loose Needles: Glovers / Leather Needles
3 sided, sharp point won't tear garment leathers. Large size for heavier threads.
Glover's Needles