The number of spacers per 50 gram pack varies by size and shape. You can find an approximate number of the spacers included in a pack under the product description on that item's page. For instance: 50G-INDSY40 contains approximately 500 spacers per 50 gram pack. This is noted in the product description on this page: http://www.artbeads.com/50g-indsy40.html

Thank you for your inquiry Sarah! The ear-wires that you are referring to are a silver plated base metal. The gauge will depend on the specific ear-wire you are referring to. Please contact our Customer Service Department for further information regarding these items. You can email us at support@artbeads.com. We look forward to hearing from you soon!

The Silver-Plated Jump Ring 6mm (Product Code: JR-S06) measures approximately 19 gauge.

That's almost half an inch. (0.45 in. to be precise)

Below are the approximate inside measurements for the settings of the SA-RING series:

SA-RING003 - 17.8mm
SA-RING004 - 18mm x 13.45mm
SA-RING005 - 15.8mm
SA-RING006 - 10mm
SA-RING007 - 14.25mm x 10.25mm
SA-RING008 - 9.5mm x 10mm

According to the ever-so-accurate Wikipedia, "In alchemy, a base metal was a common and inexpensive metal, as opposed to precious metals, mainly gold and silver."
In terms of chemical makeup, "In chemistry, the term base metal is used informally to refer to a metal that oxidizes or corrodes relatively easily, and reacts variably with diluted hydrochloric acid (HCl) to form hydrogen. Examples include iron, nickel, lead and zinc. Copper is considered a base metal as it oxidizes relatively easily, although it does not react with HCl. It is commonly used in opposition to noble metal."

In other words, base metal is a substitute for gold, silver, brass. It is not necessarily hypo-allergenic and can irreversibly tarnish.

At this time we only carry cuff blanks, which can be found below:
http://beads.artbeads.com/search?w=cuff+blank&asug=cuff

We appreciate product suggestions from our customers, and we would be happy to forward this suggestion on to our purchasing department for future consideration.

The PGM-BF001 fits a 7mm round bead. An 8mm is too tight.

The PGM-BF002 fits a 7mm round bead the best.

The PGM-BF003 fits an 8mm perfectly.

Our base metal earrings are hypoallergenic and nickel free so most people with sensitivities should be able to wear them safely.

You can use it as a link or a focal component. Below you will find two free designs from our Learning Center that demonstrates these uses:

http://www.artbeads.com/winter-dusk-necklace.html

http://www.artbeads.com/anthology-necklace.html