Sentinel fountain pens are hand madein the united kingdomby the worcester pen company. The sentinel fountain pen range offers a choice of colour options and comes with gold plated or polished stainless steel # 6 nibs. The ink filling system is a cartridge or converter. Stainless steel nibs in a variety of widths are fitted as standard. Allserenity fountain pens are supplied with an ink converter at no extra cost. Material: amber cast acrylic resin. Nib size: # 6 nib fine, medium, broadwidths cartridge/converter ink system. Weight: 25 grams length: 149 mm.