This is a pair of fuel injector nozzles that we’re bought for a Volvo MD2b. The engine was scrapped instead of rebuilding, so these went unused. One is made by Bosch in Germany, the other is a Brazilian make sold by Volvo. They both are # 233179 on the box, and have DLLA 150S 720 stamped on the nozzle. Listing these as NOS, they’ve never been installed or tested. There’s also a pair of O-rings that came with the nozzles. Specs appear on the paper sheet. Please ask any questions prior to buying, thanks!